Promise Technology TX4000 user manual Striping / Mirror RAID 0+1

Page 55

Chapter 5: Disk Array Concepts

Striping / Mirror (RAID 0+1)

A combination of RAID 0 and RAID 1 arrays. It can increase performance by reading and writing data in parallel while protecting data with duplication. A minimum of four drives are required.

With a four-drive disk array, two pairs of drives are striped. Each pair mirrors the data on the other pair of striped drives. The data capacity is similar to a standard Mirroring array with half of total capacity dedicated for redundancy.

Data Stripe

2

1

4

3

6

5

8

7

2

1

4

3

6

5

8

7

Disk Drives

Data Mirror

51

Image 55
Contents Fasttrak TX4000 Trademarks CopyrightImportant Data Protection Information Contents Page Introduction What is the FastTrak TX4000 RAID Card?Promise Array Management Utility PAM Features Benefits Keys Features and BenefitsCompatibility Quick Start Insert the FastTrak TX4000 card into an open PCI slot Installing the FastTrak TX4000 CardInstalling the Hard Drives IDE Creating Your Disk Array Creating an Array for Performance Creating a Security Array with New Drives Creating a Security Array with an Existing Data Drive QUANTUMCR8.4A Page Viewing FastTrak TX4000 Bios Screen Using FastBuild Configuration UtilityUsing the Main Menu Navigating the FastBuild Setup MenuCreating Arrays Automatically Security Optimize Array forDefining Typical Application Usage PerformanceCreating Multiple Disk Arrays Using a Hot Spare DriveViewing Drive Assignments Manually Creating an Array Selecting Stripe Block Selecting Array TypeAssigning Drives to Array Gigabyte BoundaryCreating a Mirrored Array Using New Drives Adding Fault Tolerance to an Existing Drive Source Disk Channel Drive ID Drive Model Capacity MB Making a FastTrak TX4000 Disk Array Bootable How FastTrak TX4000 Orders Arrays Creating a Hot Spare Drive for Mirrored ArraysHow FastTrak TX4000 Saves Array Information Deleting an Array QUANTUMCR8.4A Rebuilding a Mirrored Array QUANTUMCR8.4A Procedure Number Installing Software DriversNew Windows Server 2003 Installation Confirming Windows Server 2003 Driver Installation Existing Windows Server 2003 InstallationNew Windows XP Installation Confirming Windows XP Driver Installation Existing Windows XP InstallationNew Windows 2000 Installation Existing Windows Confirming Windows 2000 Driver InstallationNew Windows ME Installation Confirming Driver Installation in Windows ME Existing Windows ME InstallationNew Windows NT4.x Installation Removing the Driver from Windows NT4.x Existing Windows NT4.x InstallationNew Windows 98 Installation Confirming Driver Installation in Windows Existing Windows 98 InstallationPage About FastTrak TX4000 About Adapter BiosFastBuild Auto Menu Setup Disk Array ConceptsDisk Array Member RAID Level Performance Fault Capacity No. Tolerance DrivesDisk Array Terms Disk Array DescriptionStriping RAID About RAID LevelsData Mirror Disk Drives Mirroring RAIDStriping / Mirror RAID 0+1 Failed Array Event Drives Status Why? About Dual Data RedundancySystem locks up during boot up or when Windows starts Troubleshooting & TipsMotherboard Issues Configuring PCI IRQ resourcesUsing an Onboard IDE Card with FastTrak TX4000 System Cmos IssuesMiscellaneous problems such as Intermittent data problemsSystem Cmos displays C or D drive failure during Startup Drive-Related ErrorsCritical Array Status Error Reported during Boot Drive cannot be formed into an arrayUnable to partition or format array Cannot Rebuild Mirrored RAID 1 Array Different drive lettering under Windows NT Operating System-Related IssuesPromise Windows driver does not appear in Device Manager Troubleshooting & Tips Performance Tips Re-Configure PCI Latency SettingOptimize Array for Performance Change Setting of PCI Bus Utilization Page Can I use Atapi devices on the FastTrak TX4000 controller? Appendix a Frequently Asked QuestionsPre-Installation Will Acpi work with HDDs on the FastTrak TX4000?RAID 0+1 Mirror Drive IssuesRAID 0 Stripe RAID 1 MirrorHow do I partition/format my FastTrak TX4000 RAID array? Post-Installation Installation IssuesAppendix B Technical Support Technical Support ServicesUSA Tech Support Center Pacific Rim Sales Office European Tech SupportChina Office Disclaimer of other warranties Limited WarrantyYour Responsibility Returning Product for Repair